Save the Tab state during orientation change

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不思量自难忘°
不思量自难忘° 2020-12-31 16:30

I have 2 tabs , for example Tab1 & Tab2 which is displayed on the screen. Let the tabs be displayed on the PORTRAIT orientation.

Tab1 displays Activity1 & Ta

2条回答
  •  迷失自我
    2020-12-31 17:10

    That's not the best way. You should use onRetainNonConfigurationInstance() and getLastNonConfigurationInstance() to retain the state between config changes. Those methods are specifically for saving state during config changes.

    public Object onRetainNonConfigurationInstance() {
        return mTabHost.getCurrentTab();
    }
    
    public void onCreate() {
       ...
       Integer lastTab = (Integer) getLastNonConfigurationInstance();
       if(lastTab != null) {
          mTabHost.setCurrentTab(lastTab);
       }
       ...
    }
    

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